Vikings Moss shows up for high school graduation of fan in Minnesota

In 1998, then-Vikings rookie Randy Moss made good on his vow to rip up the league. Along the way, he befriended a toddler named Kassi Spier. Kassi fought leukemia as a four-year-old in 2000. In 2004, her father died in a car accident. In 2013, Kassi learned that she had a brain tumor. On Friday,…